Is this your answer and if so you are welcome
The open door policy impacts lasted for decades and they have three major impacts; increase Chinese backlash against foreigners. Chinese and American conflict with Japan. Increased US interest in East Asia
<span>This invention was helpful because it helped them save work, time and energy. It also made cotton easier to pick and at the same time it let farmers grow more cotton.</span>
<span>Which statement summarizes the effects of the Missouri Compromise?
- </span><span>It helped ensure a balance of slave and free states for almost 30 years.
I am not sure about the second one.
</span>
Your answer would be D. hope that you pass!